14 



CATALOGUE OF SHIELD REPTILES. 



K. castanea and K. Homeana as the adult state of Chersina 

 angulata ! 



5. PYXIS. 



Shell subglobose, solid. Sternum with the front lobe 

 mobile, the suture below the humeral and pectoral shields. 

 Animal 1 



Pyxis, Bell, Linn. Trans, xv. t. 1() ; Zool. Journ. ii. .514. 



Gray, Syn. Test. U ; Cat. Tort. B.M. 12 (1844). 



BumMl ^ Bibron, Erp. G('n. i. 15,5 ; Cat. Meth. R. G. 



Wayler, Sysf. 138. 

 Testudo § 6 (Pyxis), Fitz. Syst. Sc/iiklJc. 122; Syst.Rept. 



29. 

 Testudo, sp., Schhgel. 



1. Vjn.s arachnoides. The Pyxis. 



Shell hemispherical, yellow and black varied, very va- 

 riable in colour. 



Pyxis arachnoides, Bell, Linn. Trans, xv. t. IC. 



Gray, Syn. Ifi ; Cat. Tort. B.M. 12. 



Fit:. Syst. Rept. 2!). 



Bum.^Bib.Erp.Gen.\i.\bC,.\..\A.i.\; Cat.Me't/i. R.6. 

 P. Madagascariensis, Lesson, Bull. Sci. xxv. 120. 

 Testudo geometrica, var., Schlegel, F. Japan. 74. 

 Testudo (Pyxis) arachnoides, Fit:. Syst. Schildk. 122. 

 Pyxis arachnoidea, Tl^iegm. 



Hah. Madagascar; Isle of France. Mus. Bell (two 

 specimens). 



M. Schlegel {Fatin. Japon. Chelon. 74) regards Pyxis 

 arachnoides. Bell, as a variety of Testudo geometrica ! 



** Palmata. Feet palmate ; toes mobile ; claws 4 or 5, 

 elongate, acute (p. 4). 



Testudines lutrariee, PI in. 



Emys ou Tortues d'eau douce, Bronyniart, Institute, 



1805. 



Oppel, Rept. 

 Cuv. R. A. ii. 10. 

 Elodites ou Tortues paludines, Bmn. ^ Bib. Erp. Gen. ii. 



171 ; Cat. Meth. R. 7. 

 Phyllopodochelones, Rit:en. 

 Steganopoda, Fit:. Syst. Schildk. 

 Amydse, sect., Opipel. 

 Digitata (part.), Merrem. 

 Gynmopodi, Latr. 

 Phyllopodochelones, Chersydrochelones seu Amydae, et Po- 



docheloncs, Chersochelones seu Dysmydse, Rit:en. 

 ■Steganopodes, TJ^agler. 



t Rostrata. Month rostrate ; jaiv incased with a horny 

 sheath, not covered ivithjleshy lips. 



Rostrata, Fit:. Syst. Schildk. 1836. 

 Ohren Schildkroten, Oken. 

 Emydoidea, Fit:. 

 Fluviales seu Elodites, Diiin. ^~ Bib. 



Fam. II. EMYDID^ (Terrapens). 



Head rather depressed, covered with a hard or soft skin ; 

 jaws with a naked horny beak ; nostril small, apical. Neck 

 retractile into the cavity of the thorax. Feet depressed, 

 expanded ; toes 5 • 5, 5 • 4 or 4 " 4, almost always webbed 

 to the claws ; claws sharp. Tail conical, shielded beneath. 

 Thorax generally depressed, solid, with a distinct bony 

 margin, covered with horny ])lates. Discal plates 13, mar- 

 ginal 24-26, caudal always separate ; sternal shields 1 1 or 

 12, gular pair sometimes united. The vertebrae of the 

 neck bent in a perpendicular bow. Pelvis only united to 

 the vertebrae. Rapid ; living in freshwater ponds. Car- 

 nivorous, eating mollusca, worms, insects and carrion ; only 

 taking their food while in the water. Egg oblong, white. 



Emydidce, Gray, Ann. Phil. x. 210 (1825) ; Syn. Rept. 17; 

 Cat. Tort. B.M. 13. 



Bell, Zool. Journ. ii. 514 (1828). 

 Emydee, Gray, Proc. Zool. Soc. 1847, 55; Syn. Rept. 17 

 (1831). 



IJ'iegmann ^- Ruthe, Handb. Zool. 160. 

 Fit:. Syst. Rept. 29 (1843). 

 Sivainson, Lard. Cycloj). 344. 

 Emydina (part.). Gray, Ann. Phil. x. 210 (1825). 

 Eniydina, Bonap. Tab. .inalyt. 6 (1836). 

 Terrapene, Bonap. Obserr. Rig. Anim. 153 (1830). 

 TestudinidK, Testudinina (part.), Bonaj). Saggio Anim. 



Vert. 13 (1832). 

 Emydoides (part.), Fit:. Neue Class. (1826). 

 Emvs (Tortues d'eau douce) (part.), Brongn. Institute 

 ("1805). 



Oppel, Rept. (1811). 

 Cuv. R.A. ii. 10; ed. 2. ii. 10. 

 Merrem, Tent. 22. 

 Tortues ii boite, Cuv. R. A. ii. 12. 

 Elodites ou Tortues Paludines (§1. Les Cryptoderes), Bum. 



Sf Bib. Erp. Gen. ii. 171, 201 ; Cat. Meth. R. 7. 

 Phyllopodochelones (Chersvdrocheloues) (part.), Rit:en, 



Nov. Act. Acad. Nat. Ciir. xiv. 269 (1828). 

 Testudines lutrarise, Plin. II. N. xxxii. c. 4. 

 Podochelones (Dysmyda;) (part.), Rit:en, I. c. 270 (1828). 

 Chelidridse (part.), Swainson, Lard. Cyclop. 343. 



In some, perhaps in all the genera, the head of the 

 males is larger and broader, the tail larger and longer, and 

 more strongly clawed at the end, and the sternum more 

 concave, as in the former family, than in the females. 



Dr. Harlan observes that the females of some species are 

 more keeled than the males, but this distinction is very 

 doubtful, and requires verification. 



